Joseph woodruff



the purposes substantially as set forth and described.

Y ,a s Y n @with taies @anni fiftrr.

JOSEPH WO O-DRUFF, OFv RAHWAY, lNEW JERSEY.

Lenen Patent No. 64,929, ma May 21., 1867.

@its Scintille referrer tu im ttescv Enters nteait :un mating ont nt tlg'e 'stmt TO ALL W-HOM IIT MAY CONCERN: v

g Be lit known that I, JOSEPH WOODRUFF, of the city of Railway, in the county of Union, and State of New Jersey, have invented a new and improved Steam Boiler; and I do hereby 'declare the following to be a full and exact description thereof, reference being had to the accompanying drawings, and the letters -afnd iigures marked thereon.

The nature 'of my invention consists in connecting two cylindrical boilers together in's'u'ch a. manner by tubes as to cause a strong circulation of water from one to the other, thereby causing a greater tamount of steam to be generated by the fuel used, and at the same time securing greater safety frdm'ex'plosion.

To enable others skilled in the art of making and using steam boilers to make und use my invcntion, I will vdescribe its consti-notion and operation. In the accompanying drnwingsi Figure 1 is a. vertical longitudinal section.

Figure 2 is a vertical cross-section; and

Figure 3.2m elevation of iig. v1. t

A A, figs. `1 and 3, is the main boiler, made in the-usual manner, and fitted with the usuel lues, if desired. I3 B is the auiriliary or small boiler attached to the main boiler the necks C C. The tubes D D, having a Icalibre of about two inches, are let into the boiler A at their upper ends, and into vthe boiler d3 at their lower `ends. In boiler A they terminate in a. nozzle, as shown 'at E, dto. Also the tubes D D, dto., are bent in the manner shown, or in such a manner as to prevent bytheir spring the loosening of the joints by unequal expansion or contraction. Thc boiler is setin the usual ina-nner, the large boilerv being lsupported by the lugs IN, lite., resting on 'the brick-work of the setting, the lower or small boiler being suspended under it by the vpipes and ncclis above described. The grate-bars are placed below the 'lower boilerin the usual manner.

The operation is as follows: The boiler being filled to the usual height with water, Vand the fire being lighted immediately, the water in the small boiler and the pipes D, & c., becomes heated, and an upwardcurrent is established through the pipes D D, while a downwardl one is established through the necks C G. As the temperature increases the current increases with it, and when steam begins to be generated the current becomes yviolent, causing a strong jet from thenozzles E E. These nozzles are permanently fixed to 'thelpipes and deile'cted in diierent directions for the purpose of directing jets, that if the water in the boiler should by acci- Adent get low, the jets impinge on thc more exposed plates of the boiler a-nd prevent them from being overheated,

therebypreventng damage to the boiler or a. destructive erplosion.`

What I claim as my invention, and desire to secure by Letters -Patent, is- -1. The connection of two boilers by means of the pipes D D, substantiallyas described. 2. I also` claim extending the tubes D D or nozzles into the boiler and bending or deecting the same, for

, JOSEPH WOODRUFF.y Witnesses: y

IA. C, PIERsoN,

0. L. WOODRUFF. 

